I got very amused after watching Top Gear and seeing them play around with the G-Force meters in the GTR's. The 34 and 35 has them i think...
And being a Poor bastard and not able to afford a R34 (or 35) GTR... I decided to make one...
You start with at least a 2-axis accelerometer, I got this one off Ebay http://cgi.ebay.com.au/3-Axis-low-g-Accele...p3286.m63.l1177
combine that with an Atmel ATMega8535 (or similar) microprocessor,
A few LED's, A 5v regulator, a bunch of carefully chosen resistors, Some wire and some solder...
I used some rods of tinted perspex (machined, filed and sanded) to hide the LED's behind the dash. (looks quite nice)
Also plenty of patience...
With a bit of know how, solder it all onto a prototype board connecting the correct wires to the correct pins
Then write a nice program into the microprocessor, it took a few goes it eliminate the effects of bumps around corners distorting the reading too much.
Mine has 7 LED's on each side of the center red LED. 3 blue, 2 green, then 2 red.
it is calibrated to read 1 lateral G as 1 red light coming on... Greater then 1.5 Gs brings on all lights.
So if ya turn right really hard and sharp, ya get 3 blue, 2 green and 1 red light shooting out to the left of the guage... each light represents 0.15G (with the first blue light only coming on at 0.3G).
I also installed a switch and used the second Axis of the Accelerometer to measure Acceleration and braking G's. Braking displayed on the right, and acceleration displayed on the left.
They say i have too much time on my hands...
I Tried to get a pic of it while its displaying a reading... but its too many things to do with one person
Also I have read somewhere that using a phone while driving is illegal...
If anyone has a GTR and looks at the G-Force readings I'd be interested to know what sort of readings ya get out of a factory one and compare them...